/*
 *	Copyright 2011 ja4cli
 *
 *	Licensed under the Apache License, Version 2.0 (the "License");
 *	you may not use this file except in compliance with the License.
 *	You may obtain a copy of the License at
 *
 *		http://www.apache.org/licenses/LICENSE-2.0
 *
 *	Unless required by applicable law or agreed to in writing, software
 *	distributed under the License is distributed on an "AS IS" BASIS,
 *	WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *	See the License for the specific language governing permissions and
 *	limitations under the License.
 */
package org.skarby.ja4cli.internal;

public class Guard {

	/**
	 * Guards that the passed argument is not <code>null</code><p/>
	 * If the argument passed happens to be <code>null</code>, an {@link IllegalArgumentException} is thrown.
	 * @param object the argument to guard for being <code>null</code>.
	 */
	public static void isNull(Object object) {
		isNull(object, "Object may not be null");
	}

	/**
	 * Guards tat the passed object is not <code>null</code><p/>
	 * If the object passed happens to be <code>null</code>, an {@link IllegalArgumentException} is thrown with the passed message.
	 * @param object the argument to guard for being <code>null</code>.
	 * @param message the message to populate the message with, if the object happens to be <code>null</code>.
	 */
	public static void isNull(Object object, String message) {
		if (object == null) {
			throw new IllegalArgumentException(message);
		}		
	}
}
